Morning Glory seeds, from what I have been told, contain a small amount of natural occurring cyanide in the seed skins. For this reason it is advisable to soak the seeds overnight and then, after they are swollen, they can be easily pinched on one end and the insides will pop out of the skins. 1 seed is the equivalent to 1 mcg. of acid. An alcohol wash will remove the poison if the seeds have been treated. There are some mexican variety of morning glories that are supposedely more potent.